A simple experiment has two groups of subjects called

A simple experiment has two groups of subjects called

a. the dependent group and the independent group.
b. the extraneous group and the independent group.
c. the before group and the after group.
d. the control group and the experimental group.

An experiment always consists of a control group and experimental group.
Extraneous group is undesirable.
The before group and after group aren't defined.
The dependent and independent group come from the control group.


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